Highly Active Ruthenium Catalysts for Olefin Metathesis: The Synergy of N‐Heterocyclic Carbenes and Coordinatively Labile Ligands
作者:Thomas Weskamp、Florian J. Kohl、Wolfgang Hieringer、Dieter Gleich、Wolfgang A. Herrmann
DOI:10.1002/(sici)1521-3773(19990816)38:16<2416::aid-anie2416>3.0.co;2-#
日期:1999.8.16
Two N-heterocyclic carbene ligands at once may be one too many, at least if you intend to have highly active ruthenium catalysts for olefin metathesis. Density functional calculations recommend the replacement of the second carbene ligand in the successful ROMP catalysts 1 by coordinatively more labile ligands as in 2 or 3. In both cases, the catalytic activity is greatly improved.
至少如果您打算使用高活性钌催化剂进行烯烃复分解,则两个N-杂环卡宾配体一次可能太多。密度泛函计算建议成功的ROMP催化剂1中的第二个卡宾配体被2或3中的配位性更不稳定的配体取代。在两种情况下,催化活性都得到了极大的提高。